WASHINGTON — Days before the end of the 2020 presidential race, a team of FBI analysts tried to game out the worst potential outcomes of a disputed election.
But of all the scenarios they envisioned, the one they never thought of was the one that came to pass: a violent mob mobilizing in support of former President Donald Trump.
The team's work, which has never been reported, is just the latest example of how the Federal Bureau of Investigation was unable to predict — or prevent — the chaos that erupted at the Capitol on Jan. 6, 2021. Apparently blinded by a narrow focus on "lone wolf" offenders and a misguided belief that the threat from the far left was as great as that from the far right, the analysis and other new documents suggest, officials at the bureau did not anticipate or adequately prepare for the attack.
The story of the FBI's missteps in the weeks leading up to Jan. 6 was touched upon, but not fully explored, by the House select committee investigating Jan. 6 and may involve a mix of legal hurdles, institutional biases and simple human error.
The analysis conducted by the FBI, an exercise often known as a "red cell," was included in the select committee's investigation examining structural failures at the bureau and the Department of Homeland Security. The committee did not publish a report on those findings, but the New York Times reviewed a draft document containing preliminary conclusions.
There was no single failure. Agents ignored warning signs flashing in the open on social media and relied on confidential sources who either knew little or failed to sound the alarm. Still, even recently, bureau officials have played down not preventing the worst assault on the Capitol since the War of 1812.
"If everybody knew and all the public knew that they were going to storm Congress, I don't know why one person didn't tell us," Jennifer L. Moore, the top intelligence official at the FBI's Washington field office at the time, told congressional investigators. "Why didn't we have one source come forward and tell me that?"
Other agencies, such as the Department of Homeland Security, the Secret Service and, in particular, the Capitol Police, also had major roles in analyzing intelligence and protecting the Capitol before Jan. 6 — and all failed to secure top officials. But the FBI had a unique part to play given its superior investigative reach and mandate to prevent acts of terror.